Luxmètre spectral portable, mesure d'éclairement et de couleur de LEDs

Numéro de référence fabricant :


Fabricant Gigahertz Optik

Gigahertz Optik

Description :

The BTS256-E is portable light meter for the illuminance and light color measurement of LEDs and other light fixtures. Portable light meter with Bi-Technology sensor for acurate measurement of the photopic and scotopic Ep and Es illuminance in lx (luxmeter), determination of the Es/Ep ratio and EVE coefficient, the spectral irradiance, color temperature, Ra and R1 to R15 color rendering index, xy and u'v' color points and XYZ color value. Data storage with logger function. Portable lightmeter with USB interface and user software.

  • Prix et disponibilités

  • Posez une question à nos experts


  • Input optic: Diffuser window with 20mm diameter, cosine corrected field of view, F2 Error ≤3%
  • Silicon photodiode with photometric correction filter f1≤6% (f1 A(z) Correction ≤3%). Transimpedance amplifier with adjustable integration time (from 100µs to 6s). Seven(7) measurement ranges with offset correction. 16 Bit ADC.
  • Maximum measurable illuminance: ≥199,999 lx
  • Calibration uncertainty of photopic Illuminance +/-2.2%
  • Interface: USB
  • Operating temperature range: 10°C to 30°C
  • Benefits

    Photometric and Colorimetric Measurement Capabilities:
  • Ep photopic illuminance
  • Es scotopic illuminance
  • Es/Ep ratio of night and daylight vision
  • EVE “Equivalent Visual Efficiency” factor
  • Ee irradiance
  • Eλ spectral irradiance
  • x, y CIE 1931 color coordinates
  • u‘, v‘ CIE 1976 color coordinates
  • CT color temperature
  • Δuv Deviation from the blackbody locus
  • λdom dominant wavelength
  • λp peak intensity wavelength
  • λ0,5 spectral half-width
  • Purity color purity
  • CRI Ra and R1 to R15 Color Rendering Index